Radiation Answers

10 verified answers4 views
2
Free Preview

Which is an example of radiation?

A
Troy’s hand is burned when he touches hot wax.
B
Earth is heated by energy from the Sun.
C
A hot dog is held over a fire and gets warm.
D
Water is boiled in a pot on a stove burner.
3

A farmer places unhatched chicken eggs under a heat lamp. How does the radiation help the eggs?

A
It keeps the area around the eggs cool until the eggs hatch.
B
It makes the eggs weaker so they are easier to break open.
C
It makes the eggs stronger so they do not break.
D
It keeps the eggs warm until they hatch.
4

Andre listed some properties of electromagnetic waves.1) transfer thermal energy by radiation2) can transfer energy over great distances3) need matter to transfer energy through4) are disturbances that carry energy

A
Electromagnetic waves transfer thermal energy by conduction.
B
Electromagnetic waves can only transfer energy over short distances.
C
Electromagnetic waves can transfer energy through empty space.
D
Electromagnetic waves are not considered disturbances.
5

Which best illustrates the way in which radiation transfers thermal energy?

A
A red ball at left labeled warm does not touch a blue ball labeled cool at right. Curved arrows point from the blue ball to the red ball.
Option A
B
A red ball at left labeled warm does not touch a blue ball labeled cool at right. Curved arrows point from the red ball to the blue ball.
Option B
C
A red ball at left labeled warm touches a blue ball labeled cool at right. Straight arrows point from the blue ball to the red ball.
Option C
D
A red ball at left labeled warm touches a blue ball labeled cool at right. Straight arrows point from the red ball to the blue ball.
Option D
6

Which refers to a diagram that shows thermal energy being released by objects?

A
thermogram
B
heat sensor
C
thermal radiator
D
radiation image
7

Car manufacturers use radiation for which task?

A
sealing windows
B
drying paint
C
cleaning tires
D
lubricating engines
9

How does radiation help treat cancer?

A
It cools down the cancer cells and weakens them.
B
It cools down the non-cancerous cells and strengthens them.
C
It heats up the cancer cells and weakens them.
D
It heats up the non-cancerous cells and strengthens them.
10

Which best explains how radiation is helpful in the plastics industry?

A
It makes plastics easier to shape.
B
It adds a protective layer to plastic.
C
It decreases the melting point of plastic.
D
It improves the strength and durability of plastic.
11

Which refers to a material that takes in the energy of a wave when the wave hits it?

A
absorber
B
reflector
C
conductor
D
insulator
12

Which material would result in the greatest amount of energy transfer?

A
An absorber that is dark in color and rough.
B
A reflector that is dark in color and smooth.
C
An absorber that is light in color and rough.
D
A reflector that is light in color and smooth.
13

Which refers to a material that causes a wave to bounce off of it?

A
absorber
B
reflector
C
conductor
D
insulator
15

Anya recorded the temperatures of four different smooth materials after they were placed under a heat lamp for thirty minutes.

Question illustration
A
Material W is less absorbent than material Z.
B
Material Y is the least reflective.
C
Material X is more reflective than material W.
D
Material Z is the least absorbent.
16

Why is thermal energy from the Sun transferred to Earth through electromagnetic waves instead of any other type of thermal energy transfer?

A
Electromagnetic waves can carry energy through matter.
B
Electromagnetic waves can travel through empty space.
C
Electromagnetic waves can move through gases faster than other types of energy transfer.
D
Electromagnetic waves can move more energy than other types of energy transfer.

Did you find these answers helpful?